Solid nodules | Part solid nodules | Pure ground glass nodules | |
---|---|---|---|
Baseline scan | |||
<5 mm or <80 mm3 | Discharge | Discharge | |
5–6 mm | CT at 12 months | Interval CT at 3 months | |
≥6 to <8 mm or 80 to <300 mm3 | Interval CT at 3 and 12 months | ||
>8 mm or >300 mm3 |
| ||
Interval scan | |||
2D | If stable or smaller, assess Brock risk at 3 months
| ||
Stable nodule | Discharge after 2 years | ||
Growing | PET-CT and Herder score | ||
3D | |||
Stable or slow growth | Discharge if stable, and discharge or ongoing surveillance if slow growth (VDT>600 days) | ||
VDT 400–600 days | Further surveillance or biopsy or resection are acceptable, and decision should be based on patient preference | ||
VDT ≤400 days | Further work up, and consider definitive management |
BTS, British Thoracic Society; PET, positron emission tomography; 2D, two-dimensional; 3D, three-dimensional.